Sod Calculator
How many slabs, rolls, or pallets of sod to order, with a waste allowance and the pallet size your farm uses.
Why our numbers are more realistic
Many sod calculators hard-code the pallet size, and some skip or shrink the waste allowance. We checked them against university extension guidance and a sod grower's figures. Here's what changes:
| Typical calculator | This calculator | Why it matters |
|---|---|---|
| Pallet fixed at 450 sq ft | You choose pallet, slab or roll and enter the appropriate size | Most pallets of slabs and small rolls hold 400 to 500 sq ft, and the farm sets it, so a fixed 450 can leave you a pallet short or one too many. For 4,200 sq ft with 10% waste, that's 10 to 12 slab pallets, depending on pallet size. |
| Waste of 5%, or none at all | 10% by default | Edges, curves, and tree rings all mean trimmed pieces, and the small offcuts are too narrow to lay. University guidance says to order about 10% more. |
| Square feet only | Also square yards, and the area you actually get on pallets | Sod is often sold by the square yard (divide sq ft by 9), so your quote may not be in square feet. |
How this works
Area to order = lawn area × (1 + waste ÷ 100). Pieces = area to order ÷ square feet per piece, rounded up. Pallets = area to order ÷ square feet per pallet, rounded up. Square yards = square feet ÷ 9.
- Waste: 10% by default, the extra university guidance says to order. Plain rectangles can use a little less; curves, tree rings and beds need more, since university guidance advises against pieces narrower than 9 x 18 in, so more gets cut away.
- Pieces: the 18 x 24 in slab (3 sq ft) and rolls of 18 in x 6 ft (9 sq ft) and 24 in x 5 ft (10 sq ft) come from university guidance. The 16 x 24 in slab (2.67 sq ft) and 40 x 18 in mini roll (5 sq ft) come from a sod grower's listing, so check them with your farm.
- Pallet: 450 sq ft (50 sq yd) by default, the typical figure in university guidance.
- How you buy it: by the pallet you get a pallet count; by the slab or roll you get that count for the size you pick.
- Your state (optional): adds a note on your turf zone and the grasses that suit it, plus a May-through-July planting window in warm-season states (university guidance). It doesn't change the amount. The zone for each state is our grouping from university sources.
- Weight: 35-40 lb per square yard (university guidance), about 1,750-2,000 lb for a 450 sq ft pallet.
Before and while you lay it
- Old grass and weeds: kill or strip them first. University guidance says to control perennial weeds and unwanted grass before sodding, or they come back through the new lawn.
- Slopes: start at the bottom and work up, with rows across the slope and the seams staggered like bricks. On steep slopes, pin both ends of each piece with sod staples or wooden pegs; staples can stay in to break down.
- Shade: bermuda needs more sun than any other lawn grass and thins out under trees. St. Augustine handles shade best of the warm-season grasses, with about 4 hours of direct sun; zoysia also does well.
After you lay it
New sod needs water every day until its roots grow into the soil. University guidance agrees on the basics:
| Cool-season grass | Warm-season grass | |
|---|---|---|
| Right after laying | Soak it: about 1 in of water, enough to wet the soil under the sod. | Water deep enough to wet about 4 in of soil. |
| Until it roots | Water once or twice a day so it stays moist, not soggy. Soil kept soaked under the sod roots more slowly. Tug a corner at 10 to 14 days: if it holds, it's rooting. | Water daily for the first week, then lightly and often for 2 to 3 weeks, until it has rooted. |
| First mow | Once it has rooted, at about 3 to 4 in. | Wait 3 to 4 weeks, until it's firmly rooted. |
| Feeding | Feed about a month after laying, once it has rooted, then again 30 to 60 days later. Never before the roots take hold. | |
Never cut off more than a third of the blade at once. Hold off on weed preventer until the sod has rooted and the seams have closed; check the label for its wait.
What this doesn't cover
- Compost and soil preparation.
- Delivery fees and pallet deposits.
- Plugs and sprigs.
Sources
- Purdue Extension AY-28-W, Establishing a Lawn from Sod: 10% extra, 450 sq ft pallet, 18 x 24 in slabs, rolls, weight, and 24 hours; controlling weeds before sodding; laying on slopes and staggering seams.
- Mississippi State University Extension P2892, Selecting and Managing Turfgrass for Shade: bermuda needs the most light; St. Augustine needs about 4 hours of direct sun.
- Sod Solutions, square feet per pallet: pallet sizes by product, and 5-10% waste.
- UF/IFAS, Establishing Your Florida Lawn: summer pallet life and nitrogen timing.
- UGA Extension, Fulton County: May through July for seeding or sodding warm-season lawns.
- University of Missouri Extension G6700, establishing lawns: first watering and daily watering of new sod.
- University of Minnesota Extension, seeding and sodding: moist, not saturated; the tug test.
- University of Illinois Extension, planting a new lawn: first mow, and feeding new sod at the normal time.
- Clemson HGIC, lawn establishment: warm-season watering and first mow.
- UF/IFAS Gardening Solutions, planting, installing sod and mowing: watering for 2 to 3 weeks, first mow at 3 to 4 weeks, feeding at 30 to 60 days, the one-third rule.
Numbers last reviewed: October 9, 2026.